Scale-remover.



'tru-1an;

. T all whom it may concern Beitgknown that `I,"IGHARLES M. Tanni', a

. citizen-bf the yUnited States of America, and. lresidentof Gary, county of Lake, and State of Indiana', havetinvented certain `new andl luseful .Improvements in Scale-Removers,- of

, which the following` is a specication. i

This invention relates toimprovements in scale removers `for rolling mills. ,j A l, yA further objectis a scaleremover which has fewl operating parts and whichymay` readily be attached to any rolling mill now inuse.` i' i These and other objects are attained inthe apparatus described in the following specilication and illustrated `in the accompanying drawings, in which', i

Figure 1 is a perspective view of a rolling mill sho-wing the scale removersin position. Fig. 2 is a transverse sectional view takenon line 21--2 of lFig. 1.F ig. 3 lis a l fragmental perspective view'ifo'f the grinding bar. j f f `The `apparatus consists of a rotatably mounted grinding bar 4 and anoperating mechanism 5, for bringing the vgrinding bar j v into contact withone of the rolls; i A simi- `lar grinding bar 4 andl Ioperating mechanism 5 is provided for `the other roll 6.

The grinding bar 4" extends ftheentire length of the roll and comprises a metal bar 7, having an undercut slot 8 formed in one face thereof, anda carborundum strip 9, on which a key 10 is` formed.I The Akey engages the undercut slo'tf8,'as shown 'in-Fig..

" I-The grinding bars are provided-with journal `lugs 11, ywhich are suitablygjournaled in the rolling mill housing 12, adja-` cent to the rolls 6, `as shown in Fig.` 2, so, that the carborundum strips 9 may engage* the surface of the rolls, when the barsjarej` rotated as indicated in lFig. 2.

The means for operating the upper-grinding bar comprises a ratchet 13,l rigidly secured to the projecting `end of one of: the` journals 11, a lever 14, rotatablyy mounted on the end o-f the journall', adjacent'ftofthe l ratchet, an operating pawl 15,` pivotally v`mounte`d on the lever toengagezjthe `ratchet teeth, and a 'locking pawl` 16, "pivotally mounted on the housing12,j,to likewise en-v gage the ratchet teeth.

The lower operating'lever 14" is rotatably mounted on a pin 17, fixed in the housing`12, with the ratchet wheel 13 located between the pin 17 and the handle'18 of the lever.

Vgrinding as indicated by the arrows in Fig. 2, 1n

l i s Y ,urinariasf ivi. TERRY,

j l scLEmEi/iovnn. I'

serial Naf/9730191.

p V K Speiccatiion; of Letters Patent.` '1914. g, j 1 A"Application ieaiocvtvber 24,1913.v

An operating* pawliiiailocated on the lever 14', between the pivot pin. 17 and the v ratchetfwheel'13",'and'engages the ratchet teeth, while a lockingpawl16 is pivoted on the housing and engages theteethfof` the ratchet 13 1.

. The different relative positions ofthe i lever pivots -11 andl?, andyof the-pawls 15,'

15, 1 6, 16', are for the purpose of giving the bars opposite rotative imovements,

response to a downward pressure on either ofthe levers 14 or 14".

`The teeth of the ratchetsl and 13 are reversed with relation to one another, in order to accomplish this change in movements. y

In operation: When the rolling mill attendant observesV the slightest formation of scale on the surfaces of the rolls, he Vbears downwardly upon the levers 14 and 14', and in so doingrotates `the grinding bars in a directionopposed to the direction of rotation of the rolls, thus bringing the carborundum strips 9 into engagement with `the roll surfaces. In forcing the leversl down, the locking pawls 16 and 16l drop into locking` engagement with the teeth o-f the -ratchets 13 and 13and holdtlie lgrinding bars in engagement with the rolls.: When thehscale has been removed, the grinding bars are moved awaypfrom theroll surfaces, by `releasing the locking pawls 16 vand 16', by `means of the handles A16a and 16h. i The above describedoperation of removing scale iscarried on from time to time, as soon as the operator observes any scale formation,

andit is accomplished without stopping the use ofthe machine, and the mechanism is out anothers assistance.

IaIavin'gjthus described lmy invention, what y 1.-A scale removing device forpmill rolls consisting `of a bar with eccentric'journals `mounted in bearings adjacent to theperiphery Aof the roll, and means .for rotating ,the bar to carry it into and out of contact with the roll, said means being located eX- 'ternally tothe `ends of the rolls, whereby the yloarmay beactuated while the rolls are in operation. y

2. A scale removing device for mill rollsk comprising a rolling mill housing, millrolls j ournaled in the housing, a barmounted adjacent to theperiphery of a roll and ,hav-

a pvot-ally mounted operating lever` located" adjacent tothe grinding bar, and means for intermittently connecting'the' leverrwith the bill?.

v housing, a: roll journaledfin: the housing, aV

girfndling'bar pivoted` the roll-housings y adjacent to the ro-ll, and means forzcausing thefgrindng bar toy engage the roll, said l means comprisinag a ratchet-,- a lever mounted l 4L, A; roll grinding device comprising a Gef-0111115 patent may be obtained for adjacent tothe ratchet, anda pavvl 'mounted on the leverandengagng the ratchet.

5". A scale remover kfor rolling mills comprising a mill housing, a grinding bar pivotally mounted in themill housing,`a ratchet .xed tothe. grinding bar, a leverfpivotally rnounted adjacent to" the ratchet, lapawl imounted en the l'everv and engaging the rat'chet, and a second pavvl mounted 011 the ;hous1ng and engagmgthe ratchet. o u

' `IIL' testimony `Whereon;tI? have yli'ereunto i subscribed my name4 this'30th` idayx of.

yAugust,` 11916;

CHARLES, M5 TERRY.

f vc, centsj each,4 by' addressing the '-Commlssioner of Patents., f wapnfngqcmm-aw f s s f 

